Portable combination revolving baker&#39;s gas-oven.



D. BRICKII/IAN. PORTABLE COMBINATION REVOLVING BAKEHS GAS OVEN.

APPLICATION FILED SEPT. 5. ISI I,

l Patented Apr. 1,1919;

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EAVII) BCKMAN, @F PSDEN, CALIFGRHA.

BPDFTABLE CGS'BHLTIN REVOLVNG BAKEBFS GAS-@WEEK Specification of Letters Patent.

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Application led September 5, 1917. Serial No. i89,866.

details or" construction of o 'portable conn,

bin'etion revolving bekers ges oven. y i

The leading feature of niy invention is ,the provision ofen improved consti-notion whereby the oven niey be reedily'lnioclied down, transported, and set up again.

Figure l' is e side elevation of e portable combination revolving bekers gas oven involving the principles of my invention, and looking in the 'direction indicated by the arrow in Fig. 2.

Fig. 2 is an end elevation looking in the direction indicated by the arrow -2- in Fig. l, parte ofthe weil being broken owey to shouY the inteiuor details. 25*

Fig. 3 is e top plan View of one of the gas burners removed from the furnace.

Fig. et 1s en enlerged vertical cross-section through the gee burner on the line i of Fig. 3. 5 is e vertioei sectional detail on viine 5-.5 oFig. ei.- g

' My. oven'is constructed without any bottom es it is supposed to set on a grenitory door or uponl the groupA1 or other suiteble non-conibustible floor. The end .frames 1 and 2 and the center freine 3 are constructed of angle iron und ere substantially alike. The lower side wells 4 and 5 are sheet iron removably bolted to the frames l, 2 :ind 3, seid Walls being slightly iering in end .elevetion and extending slightly more than heirwey to. the The upper side welle 6 ore removably bolted to the upper port oi the frames, seid wells being inclined ,in-l

wardly from the upper edges of the walls 4 and 5, and the top plete 8 is removably bolted yto the'fremes and oonneets the upper ed es of the walls 6 and 7. End plates 9 en l0 ere removably bolted to the frames and 2 end extend upwardly to the level ofthe .upper edges of the .plates t and 5. The end plates 11 and 12 ere connected to es of the plates 9 endv l0 by v p v,are removably bolted to the upper .parte othegjfiqenies l endg. Boor openings are formed between the `lower edge of the plete 6 end the upper edge of the plete e, and doors" le ere'oonnected to the upper edge ofthe plete .lt by hinges 15 so as to close these door openings. Doors 16 are inserted into the plete lil. A partition 17 is secured to the freine 3, thus d'u viding the oven into two climbers, 18 on 19, each chamber eomprsinga. complete and independent baking compartment. lt will onlyl be necessary to show and describe the details of thc apparatus in the compartment 19.

A bee-ring 20 is fixed to the partition l? and e similar bemng is formed through the end plete l2. The shelf shaft 21 is inserted through the end plete 12 into the beering 20, seid shaft being slightly ehove the upper edge of the plete 4 so es to be visible through the door i4. Arms 22 are removably xed upon the shaft 2l and extend radially, seid arms Ibeing concentricelly connected by braces 23 so as to form one side of a." Ferris Wheel just inside of the bearing 20, and e corresponding Ferris Vwheel construction 24' is iocelted just inside of the end well 12. The oven shelves 25 have hangers 26 eX- tending upwardly from their ends and pivotelly connected Ato the outer ends of the urine 22 so that the shelves will liang'level like o Ferris wheel cer es the shaft 21 rpltetes. A worm geer 27 is fixed upon the outer end of the shaft 21, and e worm sheft 2 8 is mounted along *theupper edge of the ""'end pletev l0 and hes e worm pinion 29 in mesh with the gear 27, und e. belt pulley 30 for receiving power from a. motor orI other suitable source. A 'noteh 3i extends upwardly from the lower edge of the end plete 10 and the bese of the burner 32 is adapted to slide in and out through this notch. A door opening 33 is formed in the end plete l() above the notch 31, and a, sliding door 34 is provided for the opening. Y l The details of the burner 32 are as folows: Y

A rectangular freine 35 is constructed of angle iron and mounted upon legs 36, and e foraminoue plete 37 is mounted horizontelly in the frame. Burner pipes 38, 39, 40 und 41 are inserted horizontally through the vertical webs of the treme 35 above the foraminous plate 37, seid pipes havin oriices 42 immediately above the plate 8 and .set of nozzle openings by gas cocks 43, All, 45 and 46. Three cross pieces 47 are inserted into the frame 35 so as to make bases tor the four burners, and preferably there will be a sheet 37 for each burner. Each burner is provided with an independent mixing chamber and screen 48. The mixing chamber comprises a rectangular vertical casing 4:9 adapt-ed to lit within a section of the frame and form close joints with the foraininous plate 37, and the partition walls 5,0 and 51 are inserted into the casing 49 to divide the casing into three independent mixing chambers, therebeing a 42 in the burner pipes for each mixing chamber. A foraminous plate 52 is mounted on top of the casing L9 and forms the burner screen. lVhen one of the gas cocks L13, 44, 45 or 46 is opened the gas will be discharged through the corresponding nozzles 42 horizontally in opposite 1 directions from the pipe and above the plate 37.. Fresh air will pass intothe mixing ,chambers through the plate 37 and mix with the gas and will pass upwardly through the screen 52 and biirnfon top oi' the screen. The screen 52' is large and provided with very small pertorations so thata highly explosive mixture may be formed in the mix- 'ing chambers and burn onftop of the screen witlioiit burning back into the mixing chainbers. There will be no gas pressure in the mixing chamber but on the contrary the `combustion on top of the screen will produce a draft ot' fresh, air through the plate 37 to lmix with Vthe gas in the mixing chambers; ,"The burner base consisting of the v frame 35, legs A l lid- Vil may be removably inserted through 36, plates 37, and gas pipes i the riotch 31, then the casing 49 may be inserted through the lower opening 33 and placed upon the base. Of course, the supply pipe may be broken by a union at any desired place. l

A water coil is mounted in the chamber 19 against the partition wall 17 and around the burner 32, and the coil is provided with a. drain-cook 55 which leads from the lower part of the coil, and a bloivo 56 is pr0- vided at the upper end of the coilv to discharge steam into the chamber. said blowotl' being controlled by a valve 57.

'The burner 32 extends substantially the whole length ot the compartment 19,'and each section 38, 39, 40 and 41 of the burner may be turned on. shut oil, or controlled to a nicety, thereby insuring an even heat of any desired capacity. The fire and baking process may be observed through the door 1G, and the baking may be inserted or removed through tbe door 1i. A canopy and Lees , tending to the ,este

flue 58 may be mounted above the oven to carry oil` the heat.

In a companion application .for gas burners, tiled August Q9, 1918, Serial ,No 251,974 I have shown, described and claimed the burner by itself, and I do not wish to malte such claims herein;

Various changes may be made in the arrangement and details of construction without departing vfrom the spirit otl my invene tion as set up in the following claims.

l claim: v

1. A portable gas oven comprising end frames constructed of angle iron. lower side walls removably bolted to the angle iron; said walls being flaring in end elevation and extending more than halt way to the top, upper side walls removably bolted to the angle iron; said upper side walls being iiiclined inwardly from the upper edges oi the lower side walls; a top plate removably7 bolted to the angle iron, lower end plates removably bolted to Athe angle iron and extending to the upper edges of the lower side walls, upper end plates'connerted to the upper edges of the lowery end plates by hinges and removably bolted to the angle iron; there being a door opening between the lower edge of' one upper side wal-l and the: upper edge ot the corresponding lower side wall and extendingthe length of the side walls; and a door hinged to the upper edge ot the lower side wall for said door opening.

2. A portable gas oven Comprising end frames constructed of angle iron, lower side walls removably bolted to the angle iron;

said walls being flaring in end elevation and extending more than halt' way to the top; upper side walls removably bolted to the angle iron; said upper clined inwardly from the upper edges of the lower side walls; a top plate removably bolted to the angle iron, lower endplates removably bolted to the angle iron and exupper edges of the lower side walls, upper end plates connected to the upper edges of the lower end plates by hinges and removably bolted to the angle iron; there' being a door opening between the loweredge of one upper side wall and the upper edge of the corresponding lower side walls; a door hinged to the upper edge of ioo theilower side wall for said door opening; A

there being a notch in the lower edge of one end plate; and a burner mounted to slide in and out through this notch.

In testimony whereof I have signed my name to this specification.

Devin BRICKMAN. 

